Salty biscuit (Taiwanese savoury biscuit)

Instructions

1. Preheat the oven to 180 °C.
2. Mix the flour, baking powder and salt. Add the softened butter and rub in with your fingertips until it resembles sand.
3. Gradually work in the egg and cold water to form a smooth dough, without overworking it.
4. Roll the dough out to 5 mm thick and cut out rounds or squares with a cutter.
5. Place on a baking sheet lined with baking paper, brush with egg yolk and sprinkle with sesame seeds.
6. Bake for 18 to 20 minutes until the biscuits are golden. Leave to cool on a wire rack.